It always had a moon. =P

As for the image:

In case anyone's interested, this isn't just some random picture. It is one of the images in the BIONICLE Year One story animations released when BIONICLE.com was revamped in 04.

As of this comic.

And from this video.

Ah, see. I'm not eight years behind. Only four. Although, now I feel worse because those pieces of information did come after I started following the story.

On another note, Mata Nui's camouflage system works fast. There wasn't much time between the Great Cataclysm and when the Toa went up there and explored.

And on another note, the Bionicle planet is huge. Mata Nui is almost as tall as the planet we humans live on IRL, and you couldn't see very much curve on the planet when MN stood up.

I could imagine the seas covering him as he stood up, clinging due to gravity.

This one.

Anyway, that moon is cool. Makes sense, I guess, yet at the same time it makes you wonder where it came from due to someone's theory that the three circles of the Bionicle symbol represent three planets that were once one.

Then again, there's a theory that our moon was part of Earth and was hit off due to a big meteor. (Called "First Impact.")

There's also the Red Star issue....

-CF